Cable Burn In Comparison
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To allow tapers to determine whether or not they hear different sonic characteristics between a set of new cables and a set of burned-in cables.
SAMPLE CREATION PROCESS
From SparkE! at Taperssection.com:
"I used DVD Audiofile to make an ISO image of a DVD-A of all of the clips. Then I used Nero to burn a DVD-A from the ISO image. Then I played the DVD-A back, in its entirety, through a Samsung HD-841 DVD deck. From the line outpu of the HD-841, I re-recorded the clips with a UA-5 that I digimodded myself, but I did not use the digimod signal path. I went USB into my computer where the recording was captured by Audacity in 24 bit/ 96 kHz. I did this for each set of clips. Then I used Audacity to trim each of the recordings so that they covered as close as possible to the same waveforms. (The HD-841 will not play gapless without a picture file for the video display. The gaps between clips varied in length, so clips also had to be trimmed between each of the original clips so that they would line up with each other.) Then I used CDWave to track each trimmed recording into 24 bit, alternate format wav files. Then I used flac frontend to prepare the tracked wavs in preparation for distribution.
The only thing that changes from one recording set to the next is whether new cables or old cables were used."
"Well, I've recorded two sets of samples from 24 bit files that were provided by Teddy and by Freelunch. One set is for people who do not have a good soundcard, but have a way to burn and listen to DVD-A sources. The other is for people who have a good soundcard and can use something like PCABX or WinABX to compare two sources and see if they can identify which is which when played randomly
The a-set samples are 3 recordings of each clip. All 3 recordings are done with the same equipment in the signal path, except that 2 are done with one set of cables and 1 is done with the other set of cables (which I will call the odd recording). One set of cables is brand new and the other set is well broken in. The goal is to identify which 1 sample of the 3 is the odd recording. Extra credit if you can identify which cable set was used on the odd recording.
The b-set samples are 2 recordings of each clip. 1 recording is done with one cable set and 1 recording is done with the other cable set.
Both the a-set samples and the b-set samples will be made available soon, probably by bittorrent. There is a problem with the b-set samples because for some reason, they will not play in PCABX. This may be due to the .wav format that they use. When I tracked them out, I used CDWave and used the alternate 24 bit format so that the tracked files could be flac'd. Maybe that's the problem. Maybe they have to be re-stored in a different WAV format so that PCABX can use them. I've seen references to PCABX being used to compare 24 bit files, so there has to be a way to do this, but I have not figured it out yet."
And an update / workaround re the PCABX problem:
"OK, I found a way around the issue that WinABX and PCABX do not play 24 bit files. It turns out that foobar2000 has an integrated ABX comparator utility. What you do is highlight both test tracks in your playlist, right click and choose Utils/ABX two tracks...
foobar2000 also plays flac files directly, so it's a nice player for use on your PC. It also means that you don't have to unflac to wav files in order to do an ABX comparison."
Happy listening! Thanks to SparkE! over on Taperssection.com for putting the comp together, and to Teddy and Freelunch at Taperssection.com for the original source recordings.